Model Definition

• 0-54339-1: Base part number, basic memory board family; -1 denotes hardware revision 1

• Status: Discontinued OEM; available as NOS, refurbished, or used

• Cross-References: 0-54339-14 (rev 14, compatible upgrade)

Technical Specifications

• Power Supply: 5 VDC from backplane, ~6 W

• Form Factor: 3U PCB (248 × 171 × 25 mm)

• Weight: ~0.6 kg

• Operating Temperature: 0 °C to +55 °C

• Memory Capacity: 16 KB SRAM (volatile, battery-backed)

• Battery Backup: 3.6 V lithium battery (retains data ~5 years)

• Components: 55+ ICs, resistor arrays, capacitors, transistors

• Diagnostics: LED for power/memory status; test points for troubleshooting

Interfaces & Communication

• Backplane: 3U edge connector for AutoMax/MaxPak/Automate 31 racks

• Memory Bus: Parallel interface to system CPU via backplane

• Battery Connector: Onboard socket for backup battery

• No External Field Ports: All connections via backplane

Key Features

1. 16 KB Battery-Backed SRAM: Stores user programs, I/O data, and system parameters

2. Volatile Memory with Backup: Preserves data during power outages via lithium battery

3. Basic System Memory: Primary memory board for Automate 31 PLCs

4. Industrial-Grade Reliability: Designed for harsh factory environments

5. Plug-and-Play Replacement: Direct swap for failed memory boards in existing racks

Application

• PLC Systems: Automate 31 PLC racks (primary memory module)

• Drive Systems: AutoMax/MaxPak AC/DC drives (system parameter storage)

• Industries: Steel, paper, mining, machine tools, cranes, conveyors

• Use Cases: System retrofits, memory upgrades, replacement of obsolete boards

Compatibility

• Compatible Systems: AutoMax/MaxPak Drives, Automate 31 PLC

• Compatible CPUs: 0-53107, 57C430, 57C431, 57C435

• Requires Backplane: 3U slot in standard Reliance rack